AR-9 9MM 5.5" Complete Pistol Upper Receiver with Sound Forwarder

9mm Micro Upper: Specs & Features

The AR-9 9MM 5.5" Complete Pistol Upper Receiver with Sound Forwarder is a high-performance, blowback-operated upper designed for 9mm AR builds. Constructed on a precision-machined 7075-T6 aluminum forgings upper receiver, this upper assembly offers maximum durability and compatibility with standard AR-15 and AR-9 components. The 5.5" barrel is crafted from 4150 chrome moly vanadium steel with a black nitride finish for enhanced corrosion resistance and longevity.

This 9mm AR upper features a Sound Forwarder Muzzle Device giving your build a tactical look while reducing noise and recoil. The barrel comes with a 1:10 twist rate and is threaded with 1/2-36 to accept various muzzle devices, while the blowback gas system ensures reliable cycling.

The 4" M-LOK rail handguard allows for easy attachment of accessories. Upper is Non-LRBHO.

Features:

• Barrel: 5.5" 9mm AR barrel, 4150 chrome moly steel, nitride finish, 1:10 twist, 1/2-36 muzzle threads

• Muzzle Device: Sound Forwarder in Nitride Aluminum

• Receiver: A2 7075-T6 aluminum forgings, black hardcoat anodized

• Gas System: Blowback for reliable cycling

• Handguard: 4" lightweight M-LOK rail, black anodized

• BCG: not included

• Charging Handle: not included

Note: This product is fully assembled and tested. Images may not represent the exact product.

Made in the USA by Moriarti Armaments.

FAQ

Is a lower receiver included?

No. This is an upper assembly only; the lower receiver, magazine and sights are not included.

What lower does it fit?

A dedicated pistol-caliber AR lower, such as a Glock-pattern lower using 9mm Glock-style magazines. A standard AR-15 lower with 5.56 magazines will not feed it.

How does it operate?

It is a direct blowback system, so it has no gas tube. A heavy PCC buffer is used for reliable cycling.

Related: 9mm Micro ARP · all Micro ARP pistols and uppers